公开(公告)号：US09575447B2

公开(公告)日：2017-02-21

申请号：US15010262

申请日：2016-01-29

申请人： Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Motoyoshi Yamano ,  Keitaro Shoji

发明人： Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Motoyoshi Yamano ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064

摘要： A fixing device includes a nip formation pad to form a fixing nip between a first fixing rotator and a second fixing rotator, through which a recording medium bearing a toner image is conveyed. The nip formation pad includes a first planar face, a second planar face disposed downstream from the first planar face in a recording medium conveyance direction and being parallel to the first planar face, and a joint face bridging the first planar face and the second planar face. The joint face includes a first curved portion adjoining the first planar face and having a first curvature in a first direction in which a circumferential face of the second fixing rotator is curved and a second curved portion adjoining the second planar face and having a second curvature in a second direction opposite the first direction.

摘要翻译： 定影装置包括压区形成垫，以在第一固定旋转器和第二固定旋转器之间形成定影夹持部，通过该固定旋转器传送承载调色剂图像的记录介质。 压区形成垫包括第一平面，第二平面，其在记录介质传送方向上设置在第一平面的下游并且平行于第一平面;以及接合面，桥接第一平面和第二平面 。 接合面包括与第一平面相邻的第一弯曲部分，并且具有第一方向的第一曲率，其中第二定影旋转体的周面弯曲，第二弯曲部分邻接第二平面并且具有第二曲率 与第一方向相反的第二方向。

公开(公告)号：US20160223964A1

公开(公告)日：2016-08-04

申请号：US15010262

申请日：2016-01-29

申请人： Yutaka IKEBUCHI ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Yamano Motoyoshi ,  Keitaro Shoji

发明人： Yutaka IKEBUCHI ,  Yasunori Ishigaya ,  Takuya Seshita ,  Kazuya Saito ,  Yamano Motoyoshi ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064

摘要： A fixing device includes a nip formation pad to form a fixing nip between a first fixing rotator and a second fixing rotator, through which a recording medium bearing a toner image is conveyed. The nip formation pad includes a first planar face, a second planar face disposed downstream from the first planar face in a recording medium conveyance direction and being parallel to the first planar face, and a joint face bridging the first planar face and the second planar face. The joint face includes a first curved portion adjoining the first planar face and having a first curvature in a first direction in which a circumferential face of the second fixing rotator is curved and a second curved portion adjoining the second planar face and having a second curvature in a second direction opposite the first direction.

摘要翻译： 定影装置包括压区形成垫，以在第一固定旋转器和第二固定旋转器之间形成定影夹持部，通过该固定旋转器传送承载调色剂图像的记录介质。 压区形成垫包括第一平面，第二平面，其在记录介质传送方向上设置在第一平面的下游并且平行于第一平面;以及接合面，桥接第一平面和第二平面 。 接合面包括与第一平面相邻的第一弯曲部分，并且具有第一方向的第一曲率，其中第二定影旋转体的周面弯曲，第二弯曲部分邻接第二平面并且具有第二曲率 与第一方向相反的第二方向。

公开(公告)号：US09804546B2

公开(公告)日：2017-10-31

申请号：US15202859

申请日：2016-07-06

申请人： Kazuya Saito ,  Yasunori Ishigaya ,  Yutaka Ikebuchi ,  Keitaro Shoji ,  Ryohei Matsuda

发明人： Kazuya Saito ,  Yasunori Ishigaya ,  Yutaka Ikebuchi ,  Keitaro Shoji ,  Ryohei Matsuda

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042

摘要： A fixing device includes a primary heat generator and a secondary heat generator to heat an endless belt and a temperature detector, disposed opposite the secondary heat generator, to detect a temperature of the endless belt. The secondary heat generator includes an inboard edge and an outboard edge disposed outboard from the inboard edge in an axial direction of the endless belt. The secondary heat generator has an inboard length defined between a center of a detection span of the temperature detector and the inboard edge in the axial direction of the endless belt. The secondary heat generator further has an outboard length defined between the center of the detection span of the temperature detector and the outboard edge in the axial direction of the endless belt. The secondary heat generator defines a ratio of the outboard length to the inboard length that is greater than 7/3.

公开(公告)号：US20160154350A1

公开(公告)日：2016-06-02

申请号：US14952522

申请日：2015-11-25

申请人： Kazuya Saito ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa ,  Haruyuki Honda ,  Yoshiki Yamaguchi ,  Yasunori Ishigaya ,  Keitaro Shoji ,  Yutaka Ikebuchi ,  Yoshio Hattori

发明人： Kazuya Saito ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa ,  Haruyuki Honda ,  Yoshiki Yamaguchi ,  Yasunori Ishigaya ,  Keitaro Shoji ,  Yutaka Ikebuchi ,  Yoshio Hattori

IPC分类号： G03G15/20

CPC分类号： G03G15/2057

摘要： A fixing device includes a nip formation pad pressing against a pressure rotator via a fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The nip formation pad includes a base and a first thermal conductor sandwiched between the base and the fixing rotator at the fixing nip and having a first thermal conductivity greater than a basic thermal conductivity of the base. A first heater and a second heater are disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. A rotatable light shield moves to a shield position where the light shield is interposed between the second heater and the fixing rotator to shield the fixing rotator from the second heater. The second heater is disposed at a location where the light shield screens the second heater more readily than the first heater.

摘要翻译： 定影装置包括通过固定旋转器压靠压力旋转器的压区形成垫，以在定影旋转器和压力旋转器之间形成定影辊隙。 压区形成垫包括基座和夹在基座和固定旋转体之间的定影夹持处的第一热导体，并​​具有大于基底的基本热导率的第一导热系数。 第一加热器和第二加热器相对于固定旋转器的内圆周表面设置以加热定影旋转器。 可旋转的遮光罩移动到屏蔽位置，在屏蔽位置处，第二加热器和固定旋转器之间插入防护罩，以将固定旋转体与第二加热器隔离。 第二加热器设置在光屏蔽比第一加热器更容易屏蔽第二加热器的位置。

公开(公告)号：US20160124359A1

公开(公告)日：2016-05-05

申请号：US14921132

申请日：2015-10-23

申请人： Yutaka Ikebuchi ,  Yoshio Hattori ,  Ryuuichi Mimbu ,  Yasunori Ishigaya ,  Yoshiki Yamaguchi ,  Kazuya Saito ,  Toshihiko Shimokawa ,  Keitaro Shoji

发明人： Yutaka Ikebuchi ,  Yoshio Hattori ,  Ryuuichi Mimbu ,  Yasunori Ishigaya ,  Yoshiki Yamaguchi ,  Kazuya Saito ,  Toshihiko Shimokawa ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/00599

摘要： An image forming apparatus includes a fixing rotator and an opposed rotator pressed against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A heater heats the fixing rotator. A temperature sensor contacts the opposed rotator to detect a temperature of the opposed rotator. A conveyor conveys the recording medium to the fixing nip. A driver drives the conveyor. A controller, operatively connected to the temperature sensor and the driver, controls the driver to drive the conveyor to convey the recording medium to the fixing nip based on the temperature of the opposed rotator detected by the temperature sensor. The controller causes the driver to be ready to drive the conveyor when a change in the detected temperature of the opposed rotator per unit time reaches a predetermined threshold.

摘要翻译： 图像形成装置包括固定旋转体和压靠在定影旋转体上的相对的旋转体，以在其间形成定影辊隙，通过该定影夹持器传送带有调色剂图像的记录介质。 加热器加热定影旋转器。 温度传感器接触相对的旋转体以检测相对转子的温度。 输送机将记录介质传送到定影辊隙。 驱动器驱动输送机。 可操作地连接到温度传感器和驱动器的控制器基于由温度传感器检测到的相对转子的温度来控制驱动器驱动传送器将记录介质传送到定影辊隙。 当每单位时间内相对旋转体的检测温度的变化达到预定阈值时，控制器使驾驶员准备驱动输送机。

公开(公告)号：US10152006B2

公开(公告)日：2018-12-11

申请号：US15160374

申请日：2016-05-20

申请人： Yasunori Ishigaya ,  Yutaka Ikebuchi ,  Kazuya Saito ,  Keitaro Shoji ,  Ryohei Matsuda ,  Hiromasa Takagi ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa

发明人： Yasunori Ishigaya ,  Yutaka Ikebuchi ,  Kazuya Saito ,  Keitaro Shoji ,  Ryohei Matsuda ,  Hiromasa Takagi ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa

IPC分类号： G03G15/20

摘要： A fixing device includes a rotatable endless belt formed into a loop and a heater disposed opposite the endless belt to heat the endless belt. A nip formation pad is disposed inside the loop formed by the endless belt. The nip formation pad includes a metallic thermal equalizer extending in an axial direction of the endless belt. A rotatable pressure rotator presses against the nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressure rotator, through which a recording medium bearing a toner image is conveyed. The pressure rotator includes an increased tackiness portion disposed at a lateral end of the pressure rotator in an axial direction of the pressure rotator to transmit a driving force to the endless belt. The increased tackiness portion is disposed opposite the thermal equalizer of the nip formation pad.

公开(公告)号：US09753417B2

公开(公告)日：2017-09-05

申请号：US15070735

申请日：2016-03-15

申请人： Yoshiki Yamaguchi ,  Yoshio Hattori ,  Haruyuki Honda ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji ,  Ryohei Matsuda

发明人： Yoshiki Yamaguchi ,  Yoshio Hattori ,  Haruyuki Honda ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji ,  Ryohei Matsuda

IPC分类号： G03G15/00 ,  G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2028 ,  G03G15/6573 ,  G03G2215/00421 ,  G03G2215/2035

摘要： A fixing device includes an endless fixing belt; a pressure roller to contact the fixing belt; a nip forming member to press the pressure roller from the fixing belt; a nip portion formed between the fixing belt and the pressure roller; a heater to heat the fixing belt to fuse and fix toner onto a recording sheet in the nip portion; an auxiliary driven roller; an auxiliary drive roller to drive the driven roller; an auxiliary nip portion, formed between an outer circumferential surface of the auxiliary driven roller and an outer circumferential surface of the auxiliary drive roller, to nip the recording sheet after toner fixation conveyed from the nip portion; and an outlet guide member, disposed downstream of the auxiliary nip portion, to guide the recording sheet after toner fixation conveyed from the auxiliary nip portion, with the toner-fixed recording sheet surface bent in a concave shape.

公开(公告)号：US10067449B2

公开(公告)日：2018-09-04

申请号：US15194090

申请日：2016-06-27

申请人： Ryohei Matsuda ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

发明人： Ryohei Matsuda ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes a primary heater and a secondary heater that heat a fixing rotator. The primary heater includes a primary major heat generation portion and a primary minor heat generation portion. The primary minor heat generation portion includes a major heat generator that generates an increased amount of heat and a minor heat generator that generates a decreased amount of heat smaller than the increased amount of heat generated by the major heat generator. The major heat generator has a width in an axial direction of the fixing rotator that is not smaller than 30 percent and not greater than 35 percent with respect to a width of the primary minor heat generation portion in the axial direction of the fixing rotator. A temperature detector is disposed opposite the minor heat generator of the primary heater to detect a temperature of the fixing rotator.

公开(公告)号：US20170010571A1

公开(公告)日：2017-01-12

申请号：US15194090

申请日：2016-06-27

申请人： Ryohei MATSUDA ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

发明人： Ryohei MATSUDA ,  Yutaka Ikebuchi ,  Yasunori Ishigaya ,  Kazuya Saito ,  Keitaro Shoji

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G2215/2035

摘要： A fixing device includes a primary heater and a secondary heater that heat a fixing rotator. The primary heater includes a primary major heat generation portion and a primary minor heat generation portion. The primary minor heat generation portion includes a major heat generator that generates an increased amount of heat and a minor heat generator that generates a decreased amount of heat smaller than the increased amount of heat generated by the major heat generator. The major heat generator has a width in an axial direction of the fixing rotator that is not smaller than 30 percent and not greater than 35 percent with respect to a width of the primary minor heat generation portion in the axial direction of the fixing rotator. A temperature detector is disposed opposite the minor heat generator of the primary heater to detect a temperature of the fixing rotator.

摘要翻译： 定影装置包括加热定影旋转器的主加热器和二次加热器。 主加热器包括主要主要发热部分和初级次要发热部分。 主要次要发热部分包括产生增加的热量的主要发热体和产生比主要发热体产生的增加的热量小的热量减少的次要发热体。 主发热体的固定旋转体的轴向宽度相对于初级次发热部在固定旋转体的轴向上的宽度为30％以上且35％以下。 温度检测器设置成与初级加热器的次要发热体相对，以检测定影旋转器的温度。

公开(公告)号：US09494901B2

公开(公告)日：2016-11-15

申请号：US14952522

申请日：2015-11-25

申请人： Kazuya Saito ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa ,  Haruyuki Honda ,  Yoshiki Yamaguchi ,  Yasunori Ishigaya ,  Keitaro Shoji ,  Yutaka Ikebuchi ,  Yoshio Hattori

发明人： Kazuya Saito ,  Ryuuichi Mimbu ,  Toshihiko Shimokawa ,  Haruyuki Honda ,  Yoshiki Yamaguchi ,  Yasunori Ishigaya ,  Keitaro Shoji ,  Yutaka Ikebuchi ,  Yoshio Hattori

IPC分类号： G03G15/20

CPC分类号： G03G15/2057

摘要： A fixing device includes a nip formation pad pressing against a pressure rotator via a fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The nip formation pad includes a base and a first thermal conductor sandwiched between the base and the fixing rotator at the fixing nip and having a first thermal conductivity greater than a basic thermal conductivity of the base. A first heater and a second heater are disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. A rotatable light shield moves to a shield position where the light shield is interposed between the second heater and the fixing rotator to shield the fixing rotator from the second heater. The second heater is disposed at a location where the light shield screens the second heater more readily than the first heater.

摘要翻译： 定影装置包括通过固定旋转器压靠压力旋转器的压区形成垫，以在定影旋转器和压力旋转器之间形成定影辊隙。 压区形成垫包括基座和夹在基座和固定旋转体之间的定影夹持处的第一热导体，并​​具有大于基底的基本热导率的第一导热系数。 第一加热器和第二加热器相对于固定旋转器的内圆周表面设置以加热定影旋转器。 可旋转的遮光罩移动到屏蔽位置，在屏蔽位置处，第二加热器和固定旋转器之间插入防护罩，以将固定旋转体与第二加热器隔离。 第二加热器设置在光屏蔽比第一加热器更容易屏蔽第二加热器的位置。